void do_magic_suspend_2(void)
{
int is_problem;
read_swapfiles();
is_problem = suspend_prepare_image();
spin_unlock_irq(&suspend_pagedir_lock);
if (!is_problem) {
kernel_fpu_end(); /* save_processor_state() does kernel_fpu_begin, and we need to revert it in order to pass in_atomic() checks */
BUG_ON(in_atomic());
suspend_save_image();
suspend_power_down(); /* FIXME: if suspend_power_down is commented out, console is lost after few suspends ?! */
}
printk(KERN_EMERG "%sSuspend failed, trying to recover...\n", name_suspend);
MDELAY(1000); /* So user can wait and report us messages if armageddon comes :-) */
barrier();
mb();
spin_lock_irq(&suspend_pagedir_lock); /* Done to disable interrupts */
mdelay(1000);
free_pages((unsigned long) pagedir_nosave, pagedir_order);
spin_unlock_irq(&suspend_pagedir_lock);
mark_swapfiles(((swp_entry_t) {0}), MARK_SWAP_RESUME);
}
int pmdisk_suspend(void)
{
int error = 0;
if ((error = read_swapfiles()))
return error;
drain_local_pages();
pm_pagedir_nosave = NULL;
pr_debug("pmdisk: Counting pages to copy.\n" );
count_pages();
pr_debug("pmdisk: (pages needed: %d + %d free: %d)\n",
pmdisk_pages,PAGES_FOR_IO,nr_free_pages());
if (!enough_free_mem())
return -ENOMEM;
if (!enough_swap())
return -ENOSPC;
if ((error = alloc_pagedir())) {
pr_debug("pmdisk: Allocating pagedir failed.\n");
return error;
}
if ((error = alloc_image_pages())) {
pr_debug("pmdisk: Allocating image pages failed.\n");
free_pagedir();
return error;
}
nr_copy_pages_check = pmdisk_pages;
pagedir_order_check = pagedir_order;
/* During allocating of suspend pagedir, new cold pages may appear.
* Kill them
*/
drain_local_pages();
/* copy */
copy_pages();
/*
* End of critical section. From now on, we can write to memory,
* but we should not touch disk. This specially means we must _not_
* touch swap space! Except we must write out our image of course.
*/
pr_debug("pmdisk: %d pages copied\n", pmdisk_pages );
return 0;
}
